题目内容
乳牙期牙尖交错颌的特征有
2021-11-15
A.上下第二乳磨牙的远中面平齐
B.上颂两侧中切牙之间萌出初期有间隙
C.常有牙列拥挤现象
D.覆颌较浅或成对刃颌
E.纵颌曲线和横颌曲线均较明显
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